Rigid bone graft substitute

A - Human Necessities – 61 – L

Patent

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Details

A61L 27/24 (2006.01) A61L 27/54 (2006.01) A61L 27/56 (2006.01)

Patent

CA 2723635

A bone graft substitute includes a porous matrix at least partially covered by a reinforcing outer layer. The porous matrix may be a collagen-ceramic composite, and the reinforcing outer layer may be formed from highly cross-linked collagen. The implant may also include one or more reinforcement ribs, which may be made from calcium phosphate or dense collagen. In addition, the bone graft substitute preferably includes an effective amount of a bioactive agent, such as BMP-2, rhBMP-2, or func-tional fragments thereof. The bioactive agent is preferably disposed within the porous matrix.

Linvention concerne un substitut de greffon osseux comprenant une matrice poreuse au moins partiellement recouverte d'une couche externe de renfort. La matrice poreuse peut être un composite de collagène et de céramique, et la couche externe de renfort peut être réalisée à partir d'un collagène fortement réticulé. L'implant peut également comprendre une ou plusieurs nervures de renfort pouvant être réalisées à partir de phosphate de calcium ou de collagène dense. Le substitut de greffon osseux comprend en outre, de préférence, une quantité efficace d'un agent bioactif, tel que BMP-2, rhBMP-2, ou leurs fragments fonctionnels. L'agent bioactif est, de préférence, disposé à l'intérieur de la matrice poreuse.

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